Power-transmitting device



June so, 1925. 5 1,544,455

H. 'W. HUNT POWER TRANSMITTING DEVICE Filed July 1923 2 Shu s-Sheet 1 ATTOR/Vfk June 30,192" v 4 1,544,455

H. W. HUNT POWER TRANSMITTING DEVICE Filed July 7, 923 I Zinnia-Sheet 2 WA /Wm?) ATTOP/VKK Patented June 30, 1925.

UNITED STATES HOWARD w. Hour, on CINCINNATI, OHIO.

POWER-TRANSMITTING DEVICE.

Application filed July 7,

To all whom it may concern."

Be it known that HOWARD W. HUNT, a

citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, has invented new and useful Improvements in Power-Transmitting Devices, of which the following is a specification.

My invention relates to improvements in power transmitting devices employing belts and is adapted for use on reciprocating mechanisms, particularly for machine tools, such as planers and shapers. V

The object of my invention is tov provide means for driving a pulley at either of two speeds, without shifting the belt which drives it.

It will be understood that this device may be employed whenever it is desired to drive a pulley at either of two speeds by means of a single belt.

In the particular embodiment of my invention selected for illustration:

Fig. 1 is a front end elevation of a metal planer, its counter shaft and the power shaft equipped with my improved device, the planer shaft being driven at high speed, and

Fig. 2 is a vertical axial section through the countershaft, its pulleys, etc. with the driving shaft and its pulleys shown in full, the planer shaft being driven at low speed.

Referring now to the drawings, A is a line shaft, to which is rotatably secured pulley a, and the wide faced pulley a upon which the belt B may be shifted.

C is a counter shaft, to which is rotatably secured pulley 0 and upon which is loose pulley 0 upon either of which the belt B may be shifted. The counter shaft is supported by hangers 0 0 and held against endwise movement by collars c 0 Rotatably secured to the shaft C is a wide faced pulley, 0 with inset hub on its inner side 0 and upon this pulley is the open belt D for the return drive.

A metal planer P'has a drive shaft E, with loose pulley e for the return drive belt D, and e for the cross belt G for the cutting drive. Pulley e for the belt G and e for the belt D are preferably cast integral and are rotatably secured to the shaft E. Obviously these fixed pulleys e and 6 might be two separate pulleys each keyed or otherwise fixed to the shaft.

The belt D may be shifted upon either pulley e or e and the belt Gr may be shifted upon either pulleys e or e by shifter mech- 1923. Serial No. 650,035.

anism commonly employed in planers: When thebelt G is in the position shown in the drawings, the planer shaft Eis being rotated for the cutting stroke.

Splined to the shaft C is the sleeve 0 and rotatably secured to said sleeve is pulley 0 Loose on the sleeve 0 is the pulley 0 driven by belt F from the pulley a. A groove-d ring 0 secured to the sleeve '0 engages a forked shifter s, fixed to the shifter rod 8 and afl ords means for sliding said-sleeve longitudinally of the shaft so as to bring the pulley 0 under the belt G, or clearv of it by.

pushing it under the inner edge. of the pulley 0. A second shifter rod 8 passes" thru a hole in the shifter s, and to said rod is socured a collar 5 and shifter arms .9, 3 said collar 8 operates to move shifters simultaneously with shifter arms 5 and s when the rod 8? is moved 'tothe left when stopping the machine. The rods 8 and s are guided through holes in the supports .9, s. a

' It will'be seen that the belt is being 5 used in the position shown in the drawings,

to drive the shaft C through the pulley o,

and that whenever this shaft is not to be so driven, the belt B is shifted to the loose pulley 0 I As shown in the drawings, the shaft C drives pulley 0 which in turn by means of the belt D drives the loose pulley 8, but when the belt D is shifted onto the pulley 6 then the pulley 0 drives the planer shaft E for the return stroke thru the belt D and pulley 6 It will also be seen that the belt F is being used in the position shown in the drawings, to drive the loose pulley 0 which in turn drives at low speed the planer shaft E on the cutting stroke thru the cross belt G. When shifted to the left the belt G drives the loose pulley e at the same speed.

When the sleeve 0 is drawn to the left, the shaft C thru the pulley 0, belt G and pulley 6 may drive the planer shaft E at high speed, or the loose pulley e at the same speed. r

The mechanism shown and described ensures either of two speeds on the cutting stroke, but one speed on the return stroke.

The shifters for the belts G andD are adapted to be operated simultaneously, in any usual manner.

It will be apparent to anyone skilled in the art, that the relative diameters of these States If seeurefjthe speeds desiredfunder' any of the.

' 'tend to limit myself to the precise -meehanism shown, but eonceive-aswvi-th-in the *seope ofimy invention, any mechanism readable v upon the claims which may; be allowed" hereon. I Iclaim as my inVentiOn anddeSire'toise=f cure vby Letters Patent of the 1 United 1. Ashaft, a first pulley slidable.uponand a rotatablefbythe saidshafaa secondpulley' 'CO-QLXltl-Wltl'l and both 'sl'itlable andrOtatable with relation to the said shaft,'means for simultaneously shiftingthesaid-pulleys axially, and a belt drivable by eitheref-said pulleys. i

1 2. A shaft, a firstfpulley co-axial with said shaft, slidable with relationtheretdandird tatable. by the'sai'dshaft, a second pulley C0 axial With" and bothfslidableyandarotatable with relation to the saidshaft,'means-for 1 simultaneously shifting tjhe'said pulleys axi ally, a ,beltdrivable'byljeither'of said pulleys, and .means forj'dri'ving said secondpulley; A shaft, a first pulley'eo 'axialWith said shaft, slidable with relation thereto and rotatable by the said shaft, a seoond pulley, eo-axial Wltll'iLIlCl both slidable and rotab able with relation to said shaft, means for drivingrthe said shaft at a "predetermined" speed, means for 'drivin-gthe said seeond either of said vpulleys.

l. In mechanism for ter shaft,a sleeve spli ned 'to said 'counter 4n sleeve, a loose pulley on saidsleeve of sub- "stanti-allythefsame diameter. as the fixed r V pulley, a belt fortransmittingpower from Sa'idliIIW SlIHfU to the loose pulley on-said sleeve, a belt for transmitting power fromv either of' said -pulleys on the sleeve to the driven shaft and means for so sliding said sleeve on the counter-shaft as *tob'iixigthe last: named. "belt upon either the ldose *pulley or thei fiked"pulley at w illi 1 (li'ivin'g s'aid eoiintr shaft saw ofthe pui leysen ched? v ley on said eou'nter slia-ft forfidriving the tight and {lobsevretrarn pulleys; a s-leave on said eountershaftfiand splinedthereto, means forlongitudinally?shiftingithei positiomof i said sleeveon said shaft, a loosegpnlley onsaid sleeve adapted to ibe' d'rivenifrom thef other pulley on said lineshaiftg a fixed;pul ley' on :said sleeve, @bltradaipted"tO'dlflVQ QltllBI' s v the tight or loosepulley for fonwnird drive j, a

ing on the driven lshaft," and means -for shifting said4sleeve longiiiudinally; Orland counter shaft? to: bringzeither the' loose i or the: fixed pu lleyj :into driving: contact -wiflh' said belt. 1

she-a, a xeagpui In testimony? whereof' I have hereunto set LHQWAREWJ: 111m; 

